Whakaoti i te 1.2div3/5-(-17/10)=

$$1.2 \div \frac { 3 } { 5 } - ( - 1 \frac { 7 } { 10 } ) =$$

Aromātai

$$3.7$$

Ngā Upane Otinga

Whakawehe 1.2 ki te \frac{3}{5} mā te whakarea 1.2 ki te tau huripoki o \frac{3}{5}.

$$1.2\times \frac{5}{3}-\left(-\frac{1\times 10+7}{10}\right)$$

Me tahuri ki tau ā-ira 1.2 ki te hautau \frac{12}{10}. Whakahekea te hautanga \frac{12}{10} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 2.

$$\frac{6}{5}\times \frac{5}{3}-\left(-\frac{1\times 10+7}{10}\right)$$

Me whakarea te \frac{6}{5} ki te \frac{5}{3} mā te whakarea taurunga ki te taurunga me te tauraro ki te tauraro.

$$\frac{6\times 5}{5\times 3}-\left(-\frac{1\times 10+7}{10}\right)$$

Me whakakore tahi te 5 i te taurunga me te tauraro.

$$\frac{6}{3}-\left(-\frac{1\times 10+7}{10}\right)$$

Whakawehea te 6 ki te 3, kia riro ko 2.

$$2-\left(-\frac{1\times 10+7}{10}\right)$$

Whakareatia te 1 ki te 10, ka 10.

$$2-\left(-\frac{10+7}{10}\right)$$

Tāpirihia te 10 ki te 7, ka 17.

$$2-\left(-\frac{17}{10}\right)$$

Ko te tauaro o -\frac{17}{10} ko \frac{17}{10}.

$$2+\frac{17}{10}$$

Me tahuri te 2 ki te hautau \frac{20}{10}.

$$\frac{20}{10}+\frac{17}{10}$$

Tā te mea he rite te tauraro o \frac{20}{10} me \frac{17}{10}, me tāpiri rāua mā te tāpiri i ō raua taurunga.

$$\frac{20+17}{10}$$

Tāpirihia te 20 ki te 17, ka 37.

$$\frac{37}{10}$$

Tauwehe

$$\frac{37}{2 \cdot 5} = 3\frac{7}{10} = 3.7$$